3691034778691 has 8 divisors (see below), whose sum is σ = 3975010124624. Its totient is φ = 3407066517600.

The previous prime is 3691034778679. The next prime is 3691034778703. The reversal of 3691034778691 is 1968774301963.

It is an interprime number because it is at equal distance from previous prime (3691034778679) and next prime (3691034778703).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3691034778691 - 2³⁵ = 3656675040323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3691034778191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 663516 + ... + 2796841.

It is an arithmetic number, because the mean of its divisors is an integer number (496876265578).

Almost surely, 2^{3691034778691} is an apocalyptic number.

3691034778691 is a deficient number, since it is larger than the sum of its proper divisors (283975345933).

3691034778691 is a wasteful number, since it uses less digits than its factorization.

3691034778691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3542421.

The product of its (nonzero) digits is 41150592, while the sum is 64.

The spelling of 3691034778691 in words is "three trillion, six hundred ninety-one billion, thirty-four million, seven hundred seventy-eight thousand, six hundred ninety-one".